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  1. #1
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    Newb question: bottom bracket replacement

    I have an 1960's schwinn bike frame that has a one piece crank and threadleas bottom
    Bracket casing.

    Without realizing, I bought a cartridge bottom bracket and three piece crankset to match the bB.

    My question is, will it be possible to
    Use the newer crankset and Bortom
    Bracket in my old frame. The frame seems to be threadless where the bottom bracket would go.

    Is it possible?

  2. #2
    Senior Member
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    There is an adapter that converts Ashtabula (one piece) bottom brackets to standard English threads. Harris Cyclery has them for about $20. Look here:

    http://harriscyclery.net/product/tru...apter-1335.htm

  3. #3
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    Be sure to follow the direction carefully or enlist a skilled friend to assist you.

  4. #4
    Mechanic/Tourist
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    Also, the length of bottom bracket axles varies depending on several factors. Hopefully you ordered a crankset that will be compatible with your frame and drivetrain.
    There's no such thing as a routine repair.

    Don't tell me what "should" be - either it is, it isn't, or do something about it.

    If you think I'm being blunt take it as a compliment - if I thought you were too weak to handle the truth or a strong opinion I would not bother.

    Please take the time to post clearly so we can answer quickly. All lowercase and multiple typos makes for a hard read. Thanks!

  5. #5
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    Quote Originally Posted by HillRider View Post
    There is an adapter that converts Ashtabula (one piece) bottom brackets to standard English threads. Harris Cyclery has them for about $20. Look here:

    http://harriscyclery.net/product/tru...apter-1335.htm
    But you'll have to replace the crank with a set of square-taper cranks, so it'll cost more than that.

  6. #6
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    Quote Originally Posted by Airburst View Post
    But you'll have to replace the crank with a set of square-taper cranks, so it'll cost more than that.
    Check the original post "I bought a cartridge bottom bracket and three piece crankset to match the bB."
    Sounds like he already has those parts - assuming he's got the right length for the chain line to line up.

  7. #7
    Senior Member
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    Quote Originally Posted by dabac View Post
    Check the original post "I bought a cartridge bottom bracket and three piece crankset to match the bB."
    Sounds like he already has those parts - assuming he's got the right length for the chain line to line up.
    Oops, brain fart...

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